青藏高原高寒荒漠区土壤湿度监测仪器的校正方法探讨

谢芳荻, 阎建忠, 刘林山, 张镱锂, 王兆锋, 李兰晖, 李彩瑛

Calibration of the soil moisture sensor in cold desert areas on Tibetan Plateau

Fangdi XIE, Jianzhong YAN, Linshan LIU, Yili ZHANG, Zhaofeng WANG, Lanhui LI, Caiying LI

表3 校正后的EC-5测量值与含水量真实值的拟合曲线

Tab. 3 Fitting curve of the true value of soil moisture and the corrected measurements of EC-5 sensor

样点编号 土层深度 拟合曲线方程 R2 样点编号 土层深度 拟合曲线方程 R2 Q01 3~7 cm y=0.9831x+0.0014 0.9831 Q09 3~7 cm y=0.9945x+0.0005 0.9944 13~17 cm y=0.9895x+0.0009 0.9896 13~17 cm y=0.9931x+0.0006 0.9931 Q02 3~7 cm y=0.9903x+0.0007 0.9903 Q14 3~7 cm y=0.9871x+0.001 0.9871 13~17 cm y=0.9895x+0.0008 0.9895 13~17 cm y=0.9449x+0.0044 0.945 Q03 3~7 cm y=0.9887x+0.0008 0.9887 R01 3~7 cm y=0.9946x+0.0004 0.9946 13~17 cm y=0.9739x+0.0022 0.9723 13~17 cm y=0.975x+0.0022 0.975 Q04 3~7 cm y=0.9813x+0.0016 0.9812 R02 3~7 cm y=0.8654x+0.0105 0.8654 13~17 cm y=0.9794x+0.0018 0.9794 13~17 cm y=0.9877x+0.0011 0.9878 Q05 3~7 cm y=0.9794x+0.0015 0.9795 R03 3~7 cm y=0.852x+0.0115 0.852 13~17 cm y=0.9854x+0.0012 0.9854 13~17 cm y=0.9881x+0.001 0.9881 Q06 3~7 cm y=0.986x+0.0012 0.9859 R04 3~7 cm y=0.9792x+0.0015 0.9791 13~17 cm y=0.9841x+0.0013 0.9841 13~17 cm y=0.9405x-0.0378 0.9489 Q07 3~7 cm y=0.9872x+0.001 0.9871 R05 3~7 cm y=0.8427x+0.0103 0.8427 13~17 cm y=0.9938x+0.0005 0.9938 13~17 cm y=0.9748x+0.0022 0.9748 Q08 3~7 cm y=0.9893x+0.0009 0.9893 R06 3~7 cm y=0.9737x+0.0022 0.9737 13~17 cm y=0.9847x+0.0012 0.9847 13~17 cm y=0.9703x+0.004 0.9782